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THE EFFECT OF IMPREGNATED GLASS FIBERS ON THE FLEXURAL STRENGTH OF ACRYLIC AND COMPOSITE RESIN: AN IN-VITRO STUDY

Dindal, Christopher (2012) THE EFFECT OF IMPREGNATED GLASS FIBERS ON THE FLEXURAL STRENGTH OF ACRYLIC AND COMPOSITE RESIN: AN IN-VITRO STUDY. Master's Thesis, University of Pittsburgh. (Unpublished)

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Abstract

Objective: The aim of this in-vitro study is to compare flexural strength of polymethyl methacrylate (PMMA) and bis-acryl composite (BAC) resin material reinforced with impregnated glass fibers.
Materials and Methods: Two groups of rectangular test specimens (n=20) were fabricated. One group contained PMMA acrylic and the other contained bis-acryl composite resin material. The experimental groups contained impregnated glass fiber reinforcement and the non-reinforced group served as the control. Flexural strength of the specimens was measured by a universal testing machine until fracture. The mean flexural strength (N) was compared by a two way ANOVA test and followed by a simple main effect, using a significance level of 0.05.
Results: For reinforced groups, the mean flexural strength of PMMA resin increased from 349.4N (+/- 23.4) to 613.6N (+/-54.2). For BAC resin, the mean flexural strength increased from 513.6N (+/-103.1) to 603.5N (+/-50.5). Reinforced PMMA resin was highly significant (p<0.001) compared to BAC resin (p=0.150). At the non-reinforced control groups, the flexural strength BAC resin was significantly higher than PMMA resin group (p=0.036).
Conclusion: Although impregnated glass fiber increased the flexural strength of both PMMA and BAC groups, it was significantly higher for PMMA resin. At the non-reinforced control groups, the flexural strength of BAC resin was significantly higher than PMMA.


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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Dindal, Christopherc_dindal@yahoo.com
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Thesis AdvisorMohsen, Azarbalmoa5@pitt.eduMOA5
Committee CoChairPipko, Donalddjp4@pitt.eduDJP4
Committee MemberAlmarza, Alejandroaja19@pitt.eduAJA19
Committee MemberClose, Johnjmc10@pitt.eduJMC10
Date: 9 July 2012
Date Type: Publication
Defense Date: 27 April 2012
Approval Date: 9 July 2012
Submission Date: 19 June 2012
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 53
Institution: University of Pittsburgh
Schools and Programs: School of Dental Medicine > Dental Science
Degree: MDS - Master of Dental Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Glass fibers; Flexural strength; Resin reinforcement
Date Deposited: 09 Jul 2012 15:39
Last Modified: 15 Nov 2016 13:59
URI: http://d-scholarship.pitt.edu/id/eprint/12473

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